Motor attachment for drilling-machines



F. JONES.

MOTOR ATTACHMENT FOR DRILLING MACHINES.

APPLICATION FILED FEB. 8. 1918.

Patented Feb. 10, 1920.

Elma/whom, F Jonas,

FRANK JONES, OF KENILWOBTH, UTAH.

MOTOR ATTACHMENT FOR DRILLING-MACHINES.

Specification of Letters Patent. Patented Feb 10, 1920 Application filed February 8, 1918. Serial No. 216,047. 7

To all who-m it may concern:

Be it known that I, FRANK J ONES, a citizen of the United States, residing at Kenilworth, in the county of Carbon and State of Utah, have invented certain new and useful Improvements in Motor Attachments for Drilling-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in drilling machines, and particularly that type used for drilling holes to receive explosive charges in mining operations and the machine is so constructed as to have secured thereto a motor to facilitate the drilling action and thus obviate the necessity of turn ing the drill by hand.

A further object of this invention is to provide a novel motor supporting table which may be adjusted at various heights for positioning the drill at various angles.

A still further object of this invention is to provide a supporting device equipped with a movable block through which is mounted a threaded shank, which shank is adapted to cause the motor to slide on its support during the drilling action.

Another object of this invention is to provide a motor attachment for drilling machines of this character, which will be simple, practical and comparatively inexpensive in construction.

WVith these and other objects in view the invention consists in the novel combination and arrangement of parts hereinafter more fully. described and set forth in the claim hereto appendech In the drawing:

Figure 1 is a side elevation of my im-- proved mining machine. as made in accordance with this invention.

Fig. 2 is a vertical longitudinal view of the same.

Fig. 3 is a fragmentary transverse sectional view.

Fig. 4 is a transverse sectional view illustrating the manner in which the motor is slidably mounted upon the table.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

sectional Referring to the drawing, the numeral.

5 indicates a pair of spaced vertical up rights connected together at the upper and lower ends thereof by the crossed members 6. A screw threaded shank 7 is fitted centrally through each member 6, and each shank has secured to its under side a hinge 12 to which is secured one end of the hollow member 13.

A rod 14 has one end slidably fitted into the hollow member and is held adjusted therein by the set screw 15 which extends transversely through the member and engages the said rod. The free end of the rod 14 is forked and is adapted to be placed about the upper end of' the lower shank 7 between the uprights 5' as illustrated in Fig. 2.

The upper side of the platform 11 has secured thereto a pair of spaced angle brackets-16 under which the opposite side edges of the base 17 of the motor 18 are adapted to be fitted so as to permit the motor to slide longitudinally of the platform but to hold the same against lateral shifting thereon. The motor 18 is provided with the usual armature shaft to one end of which is secured a connecting sleeve 20. A screw threaded shaft 21 has one end secured to the connecting sleeve 20 and this shaft extends through the bearing block 22. The shaft 21 extends in parallel relation to the platform 17. The bearing block 22 is provided with screw threads to receive thescrew threads of the shaft 21 to permit the shaft to be readily moved therethrough thus sliding the motor on the platform 11 when the shaft is rotated. The bearing block 22 has secured to each side a laterally extending pin 23' which is adapted to be removably arranged in the teeth 9 to support the shaft and block. A drill bit 24 is secured to the free end ofthe shaft 21 and this bit is of the type now in general use.

In the use of my improved drill, it will be apparent that the frame 5 is positioned as shown in Figs. 1 and 2 thereby presenting the drill 24 to the surface to be drilled. To

adjust the platform 11 to the proper angle,

the rear end thereof is elevated or lowered as required. The pins 10 and 23 are now engaged by the proper teeth of the frame and motor 18 positioned at the rear end of the tracks 16. Upon the starting of the motor, the same will advance in synchronisin with the rotation of the drill.

Having thus described my invention what I claim is:

'jA' machine of the class described including a pair of spaced uprights, members connecting said uprights, anchoring shanks extending centrally through each connecting me1nher, the forward edge of each upright provided with a plurality of relatively spaced upwardly inclined teeth, a platform, laterally extendin pins secured to the opposite sides of the platform at one end thereof and adapted to be removably arranged in the teeth, a hollow member hingedly secured to the under side of the platform at the opposite end thereof, a rod adjustably fitted in said hollow member, said rod adapted to embrace the lower anchoring pin, a motor slidably mounted upon the upper side of the platform, means for holding the motor against lateral shifting, a bearing block, laterally extending pins carried by the block adapted for engagement with the teeth of the upright, a shank screw threadedly fitted through said block, means for connetting the shank t0 the motor, and a drill carried by the free end of the shank.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK J ONES,

Witnesses J. BARBAGLIS, S. WATT. 

